Home Network, Long

This is my L.A.N internet diagram. It begins with the modem being set upstairs. The modem/router has a coax cable since my provider is Comcast. The modem/router allows things to be connect by wire or wireless. Then the modem/router is connected to a smart TV. As well as my other devices which are a wireless printer, 2 ipads and 3 iphones and 4 laptops. I already knew some things about the internet and my modem/router. But I never knew anything about it in full detail. I learned that the wire connected in my modem/router is a coax cable and that different service providers use different cables. I don't really know what I would tell other people about having a home network, maybe that nothing is actually on the internet.